Inhalation device

Abstract

The present application discloses an inhalation device, which reduces the difficulty and cost of production while ensuring the use effect through a simplified structure; in the inhalation device of the present application, the filter element is tightly fitted with the capsule insertion port, and when the suction nozzle and the cover plate are engaged, the entire screen portion is located in the capsule compartment, so that when inhaling drug powder, the airflow can better pass through the screen portion under the action of negative pressure to produce an ideal flow direction, thereby ensuring effective inhalation of the drug powder.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and more particularly to an inhalation device. Background Art

[0002] Current drug delivery methods for some respiratory diseases can be used to administer medications directly via inhalation. For example, a specialized drug delivery device punctures a capsule containing drug powder and inhales the powder into the respiratory tract. However, conventional drug delivery devices are often complex in structure, increasing manufacturing costs. Summary of the Invention

[0003] In view of the shortcomings of the above-mentioned related technologies, the purpose of this application is to provide an inhalation device to overcome the technical problems of complex structure and high manufacturing cost of the drug delivery device in the above-mentioned related technologies.

[0004] To achieve the above-mentioned and other related purposes, the present application provides an inhalation device, comprising: a suction nozzle, comprising a suction nozzle body and an inhalation channel formed in the suction nozzle body, the bottom of the inhalation channel being a tubular structure; a filter element, comprising a sleeve portion sleeved on the bottom end of the tubular structure and a screen portion integrally formed with the sleeve portion, for preventing capsule debris generated after the capsule is punctured from entering the inhalation channel; a capsule bin, located below the suction nozzle, comprising a cover plate, and a cavity integrally formed on the lower side of the cover plate and for accommodating capsules in use, the cover plate being provided with a cavity connected to the cavity and correspondingly combined with the screen portion a capsule insertion port; a piercing assembly, arranged on one side of the capsule compartment, comprising a button member and a puncture needle movably arranged on one side of the capsule compartment, wherein the button member moves relative to the capsule compartment when subjected to force in a state of use to drive the puncture needle to puncture the capsule in the capsule compartment; a base, comprising a seat body for accommodating the chamber and part of the piercing assembly; a cover body, covering the suction nozzle in a state engaged with the base; wherein, when a capsule is inserted into the capsule compartment and the capsule is punctured, when negative pressure is generated in the inhalation channel, the medicine powder in the capsule passes through the capsule insertion port and the screen portion into the inhalation channel.

[0005] In certain embodiments of the present application, the cover, the suction nozzle, the capsule compartment, and the distal side of the base are coaxially hinged via a hinge.

[0006] In certain embodiments of the present application, the cover body includes a first engaging portion located on the proximal side of the cover body for engaging with the proximal edge of the cover plate.

[0007] In certain embodiments of the present application, the first engaging portion is a protrusion located on the inner side of the proximal end of the cover body, and the proximal end of the cover plate has an end surface that cooperates with the protrusion, so that the cover body and the cover plate are engaged at the proximal side.

[0008] In certain embodiments of the present application, the cover includes a first anti-slip portion located on the proximal side of the cover.

[0009] In certain embodiments of the present application, the nozzle body comprises:

[0010] The mounting portion is used to engage with the cover of the capsule compartment; the mouthpiece is integrally formed with the mounting portion and has an approximately flat elliptical structure adapted to the human mouth; wherein a transition surface is provided between the mounting portion and the mouthpiece.

[0011] In certain embodiments of the present application, the nozzle includes a second locking portion located proximal to the nozzle; the cover plate includes a third locking portion located proximal to the cover plate, and the second locking portion and the third locking portion are engaged at the proximal end.

[0012] In certain embodiments of the present application, the second engaging portion is a hook structure formed on the lower surface of the nozzle, and the third engaging portion is a bayonet provided on the cover plate and corresponding to the hook structure.

[0013] In certain embodiments of the present application, the nozzle includes a second anti-slip portion located on the proximal side of the nozzle.

[0014] In certain embodiments of the present application, the bottom end of the tubular structure extends out of the nozzle body, so that the filter mounted thereon is pressed against the capsule insertion opening when the nozzle and the cover are engaged, thereby forming a closed airflow channel.

[0015] In certain embodiments of the present application, the contact surface between the filter element and the capsule compartment has matching end surfaces so that the filter element and the capsule compartment are tightly fitted when the suction nozzle and the capsule compartment are engaged.

[0016] In certain embodiments of the present application, the cover plate includes a side wing, and the side wing is provided with a fourth locking portion for locking on the fifth locking portion on the upper edge of the base.

[0017] In certain embodiments of the present application, a first air inlet is provided on the cover plate to facilitate external air to enter the internal space of the base through the first air inlet when negative pressure is generated in the suction channel.

[0018] In certain embodiments of the present application, the chamber of the capsule magazine includes a main chamber, and the diameter of the main chamber is larger than the transverse cross-sectional diameter of the capsule and smaller than the longitudinal cross-sectional diameter of the capsule.

[0019] In certain embodiments of the present application, a sub-chamber connected to the main chamber is provided at the bottom of the chamber of the capsule compartment, the bottom end of the sub-chamber has a second air inlet, and there is a gap between the second air inlet and the bottom surface of the base, and the diameter of the sub-chamber is smaller than the transverse cross-sectional diameter of the capsule.

[0020] In certain embodiments of the present application, the chamber of the capsule magazine includes a mounting structure for cooperating with the piercing assembly so that the piercing assembly uses its puncture needle to pierce the capsule in the capsule magazine during movement relative to the capsule magazine.

[0021] In certain embodiments of the present application, the mounting structure includes: a mounting plate having symmetrical slots; a support portion formed on the mounting plate and located between the symmetrical slots; and two tube portions formed on the mounting plate and located on the upper and lower sides of the support portion, respectively, connected to the chamber to limit the insertion direction of the needle.

[0022] In certain embodiments of the present application, the piercing assembly further includes a reset mechanism, located between the button member and the abutment portion, for being compressed when the button member moves toward the capsule compartment to provide a reset force to restore the puncture needle and the button member to their initial positions.

[0023] In certain embodiments of the present application, the puncture needle is inserted into the tube portion, and the proximal end of the puncture needle is fixedly connected to the button member.

[0024] In certain embodiments of the present application, the button member includes a pressing portion and a movable connection portion integrally formed with the pressing portion, and the distal end of the movable connection portion has a limiting portion that cooperates with the slot.

[0025] In certain embodiments of the present application, a third anti-slip portion is provided on the outer surface of the pressing portion.

[0026] In certain embodiments of the present application, the needle tip of the needle has a bevel.

[0027] In certain embodiments of the present application, there are two needles arranged vertically, and the distance between the two needles is smaller than the height of the capsule and larger than half of the height of the capsule.

[0028] In certain embodiments of the present application, the seat body of the base includes a fourth anti-slip portion located at a distal side of the seat body.

[0029] In certain embodiments of the present application, an opening is provided at the proximal end of the base to provide movement space for the piercing component.

[0030] In certain embodiments of the present application, a second stop portion is provided on the seat body of the base to limit the movement position of the piercing assembly relative to the capsule compartment.

[0031] In certain embodiments of the present application, the base further comprises a transparent window mounted on the base body, and the chamber of the capsule bin has a transparent wall for observing the status of the capsule in the capsule bin through the base when in use.

[0032] In certain embodiments of the present application, the transparent window is U-shaped. Correspondingly, a bottom surface of the base body is provided with mounting grooves extending to the front and rear sides of the base body for mounting the transparent window.

[0033] In certain embodiments of the present application, the base is made of a transparent material, and the chamber of the capsule compartment has a transparent wall, so that the state of the capsule in the capsule compartment can be observed through the base when in use.

[0034] In summary, the inhalation device of the present application, through its simplified structure, reduces the difficulty and cost of production while ensuring effective use. In the inhalation device of the present application, the filter element fits tightly against the capsule insertion port, and when the nozzle and cover are engaged, the entire screen portion is located within the capsule compartment. As a result, when inhaling drug powder, the negative pressure allows the airflow to better pass through the screen portion, generating an ideal flow direction, ensuring effective inhalation of the drug powder.

[0035] Furthermore, the guiding structure between the cover and the button prevents the needle from straying or causing resistance when pressing due to the unstable movement of the button. The cover, nozzle, filter, and base of the inhaler are coaxially connected and feature anti-slip structures in multiple locations, embracing ergonomic design.

[0036] Those skilled in the art can easily discern other aspects and advantages of the present application from the detailed description below. In the detailed description below, only exemplary embodiments of the present application are shown and described. As will be appreciated by those skilled in the art, the content of this application enables those skilled in the art to modify the disclosed specific embodiments without departing from the spirit and scope of the invention to which this application relates. Accordingly, the descriptions in the drawings and specification of this application are merely exemplary and not restrictive. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The specific features of the invention involved in this application are shown in the appended claims. The features and advantages of the invention involved in this application can be better understood by referring to the exemplary embodiments described in detail below and the accompanying drawings. A brief description of the drawings is as follows:

[0038] Figure 1a Shown is a schematic diagram of the structure of an inhalation device in one embodiment of the present application;

[0039] Figure 1b Shown is a schematic diagram of the hinged relationship between the cover, nozzle, capsule compartment and base in one embodiment of the present application;

[0040] Figure 2 Shown is a schematic structural diagram of a nozzle in one embodiment of the present application;

[0041] Figure 3 Shown is a schematic structural diagram of a filter element in one embodiment of the present application;

[0042] Figure 4 Shown is a schematic structural diagram of a cover body in one embodiment of the present application;

[0043] Figure 5 Shown is a schematic structural diagram of a capsule compartment in one embodiment of the present application;

[0044] Figure 6 Shown is a schematic structural diagram of the cover and capsule compartment in one embodiment of the present application;

[0045] Figure 7 Shown is a schematic structural diagram of the cover body in another embodiment of the present application;

[0046] Figure 8 Shown is a schematic diagram of another embodiment of the cover plate in the present application;

[0047] Figure 9 Shown is a schematic diagram of the engagement state of the suction nozzle and the capsule compartment in one embodiment of the present application;

[0048] Figure 10 Shown is a schematic structural diagram of a filter element and a capsule compartment in one embodiment of the present application;

[0049] Figure 11 Shown is a schematic structural diagram of a filter element in another embodiment of the present application;

[0050] Figure 12a Shown is a schematic structural diagram of a filter element and a nozzle in one embodiment of the present application;

[0051] Figure 12b Shown is a cross-sectional view of a filter element and a nozzle in one embodiment of the present application;

[0052] Figure 13 Shown is a schematic structural diagram of a filter element in one embodiment of the present application;

[0053] Figure 14a Shown is a schematic structural diagram of a base in one embodiment of the present application;

[0054] Figure 14bShown in this application Figure 14a A magnified view of the local structure of part A in the middle;

[0055] Figure 15 Shown is a schematic structural diagram of a capsule compartment in one embodiment of the present application;

[0056] Figure 16 Shown is a schematic structural diagram of a piercing assembly and a capsule cartridge in another embodiment of the present application;

[0057] Figure 17 Shown is a schematic structural diagram of the capsule compartment and capsule in one embodiment of the present application;

[0058] Figure 18 Shown is a schematic structural diagram of a needle in one embodiment of the present application;

[0059] Figure 19 Shown is a schematic structural diagram of a button member in one embodiment of the present application;

[0060] Figure 20a Shown is a schematic structural diagram of a button member in another embodiment of the present application;

[0061] Figure 20b for Figure 20a A magnified schematic diagram of the G portion in FIG;

[0062] Figure 21 Shown is a schematic structural diagram of a piercing assembly in one embodiment of the present application;

[0063] Figure 22 Shown is a schematic structural diagram of a button member in one embodiment of the present application;

[0064] Figure 23 Shown is a schematic diagram of the exploded structure of the piercing assembly and capsule cartridge in another embodiment of the present application;

[0065] Figure 24 Shown is a schematic structural diagram of a base in another embodiment of the present application;

[0066] Figure 25 Shown is a schematic structural diagram of a base in another embodiment of the present application;

[0067] Figure 26 Shown is a schematic structural diagram of a capsule in one embodiment of the present application;

[0068] Figure 27 Shown is a schematic structural diagram of another embodiment of the inhalation device in the present application;

[0069] Figure 28 Shown is a schematic diagram of the airflow direction of the inhalation device in one embodiment of the present application. DETAILED DESCRIPTION

[0070] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0071] In the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It should be understood that other embodiments may also be used, and that changes in module or unit composition, electrical, and operational aspects may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patents. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0072] Although in some instances the terms first, second etc. are used to describe various elements, information or parameters in this article, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one element or parameter from another element or parameter. For example, the first clamping portion can be referred to as the second clamping portion, and similarly, the second clamping portion can be referred to as the first clamping portion, without departing from the scope of the various described embodiments. The first clamping portion and the second clamping portion are both describing a clamping portion, but unless the context clearly indicates otherwise, they are not the same clamping portion. Similar situations also include the first stop and the second stop, or the first anti-slip portion and the second anti-slip portion.

[0073] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0074] As described in the background technology, in some embodiments, the drug delivery device for treating respiratory diseases is usually complex in structure. For example, in order to avoid inhaling capsule fragments when sucking drug powder after puncturing the capsule, the drug delivery device has a metal screen. In order to fix the metal screen on the suction nozzle, it is necessary to manufacture a fixed frame with a special structure to embed the metal screen into the fixed frame. The manufacture and assembly of different materials increase the complexity of manufacturing and material costs; moreover, the metal screen is easy to deform when used improperly, and the deformation of the screen directly affects the direction of the airflow during use. Moreover, the metal material is easy to oxidize or rust in a humid environment for a long time as it is used, thereby reducing the product life.

[0075] Furthermore, in some related technologies, the capsule chamber and the capsule chamber cover of the inhaler of the above-mentioned drug delivery device are two independent components, which are combined together to form a chamber for placing capsules. However, since the two independent components need to be combined during the assembly process, this not only increases the material and production costs; more importantly, although the two independent components of the capsule chamber and the capsule chamber cover are fixedly installed, as the patient's use time increases or the number of frequent opening and closing times increases, a gap will appear between the capsule chamber and the capsule chamber cover, affecting the airflow during use, thereby making it impossible for the airflow when inhaling the medicine to achieve the ideal effect, thereby reducing the inhalation efficiency.

[0076] Given that the inhalation efficiency of an inhalation device, which is a drug delivery device, significantly impacts drug delivery efficiency and efficacy, the present application provides an inhalation device. In an embodiment, the inhalation device facilitates a patient to inhale powdered drug from a capsule encapsulated with powdered drug through respiratory inhalation. In some applications, the inhalation device, which is a drug delivery device, is also referred to as an inhaler, a powder inhaler, or a dry powder inhaler. During use, the patient can load the capsule into a capsule compartment within the inhaler before use. The patient can then press a button that activates a lancet, causing the lancet to switch from a static state to a dynamic state to puncture the capsule within the capsule compartment, thereby releasing the powdered drug within the capsule under the action of negative pressure. Examples of such powdered drugs include, but are not limited to, tiotropium bromide, indacaterol, and other drugs that can be administered through respiratory inhalation.

[0077] In an exemplary embodiment, see Figure 1a , which shows a schematic diagram of the structural decomposition of the inhalation device in one embodiment of the present application. As shown in the figure, the inhalation device includes a cover body 1, a mouthpiece 2, a filter 3, a capsule compartment 4, a piercing component 5, and a base 6.

[0078] The cover is a component used to cover the suction nozzle 2 when engaged with the base 6 to prevent the suction nozzle from being contaminated by the outside world.

[0079] In the present application, the snap fit refers to a physical fit between two components that can quickly or conveniently achieve a fixed or separated state by using mechanical deformation (such as interference fit) or mechanical interference. In the embodiments, for example, the fit between a hook and a slot, the fit between a hook and a hook, or the fit between a protrusion and a groove, the fit between a protrusion and a protrusion, etc. In the present application, the snap fit structure between the two components will be explained based on the mechanical structure of different components in their respective specific implementation states and in conjunction with diagrams.

[0080] The nozzle is a component used to cooperate with the human mouth to inhale the drug powder in the capsule in the capsule compartment into the body. In this embodiment, please refer to Figure 2 , which shows the structure of the nozzle in one embodiment of the present application. The inhalation channel 22 is integrally formed in the nozzle body 21. To facilitate the formation of a smooth airflow path after the inhalation channel and the capsule compartment are combined, the bottom of the inhalation channel has a tubular structure. The tubular structure can be a circular tube, a square tube, or another shape, as long as it can pass through the powdered drug. However, considering inhalation efficiency, a circular tube with a circular cross-section is used in this embodiment.

[0081] In this application, the one-piece molded structure refers to a structure in which multiple components with their own functions are integrated into one body and cannot be physically separated by non-destructive means. The structure is usually fused into one body during the manufacturing stage, such as by mold injection molding, or integrally molded by additive manufacturing (3D printing).

[0082] The filter element is used to refer to a component that filters objects in the capsule compartment and helps generate efficient inhalation airflow. In the embodiment, the filter element 3 is sleeved on the tubular structure of the bottom 22 of the inhalation channel.

[0083] In the present application, the term "sleeved" refers to the ability of a larger diameter component to be sleeved onto a smaller diameter component due to a diameter difference between the two components. Therefore, on the one hand, the filter element needs to filter so that only the drug powder passes through the inhalation passage, and on the other hand, the filter element needs to be fixed to the bottom of the inhalation passage 22.

[0084] In one embodiment, see Figure 3, which is a schematic structural diagram of the filter element in the present application in one embodiment. As shown in the figure, the filter element 3 includes a sleeve portion 31 and a screen portion 32. The screen portion is used to prevent capsule skin debris generated after the capsule is punctured from entering the inhalation channel, and the sleeve portion is used to be sleeved on the bottom end of the inhalation channel 22 of the tubular structure; and in this embodiment, the screen portion 32 and the sleeve portion 31 are an integrally formed structure, so as to facilitate manufacturing and production while taking into account the filtering and fixing functions, eliminating the step of assembling the screen portion and the sleeve portion, and ensuring that the filter element including the screen portion and the sleeve portion is connected to the inhalation channel. The mechanical coordination of the channel combination is stable, and the material management cost is saved due to the simplified structure. Since the screen portion 32 and the sleeve portion 31 are an integrally formed structure and are designed with the same material, the screen portion 32 and the sleeve portion 31 will not be deformed as the patient's use time increases. The stability of the screen portion 32 structure ensures that the screen portion 32 forms a matching contact surface after being combined with the capsule compartment, which is conducive to forming an unobstructed airflow channel, thereby ensuring that the airflow when the patient inhales, especially when inhaling medicine, can ensure the inhalation efficiency, thereby ensuring the drug administration efficiency and effect.

[0085] The capsule compartment is a component for accommodating capsules and maintaining connection with the piercing assembly, the nozzle, and the base. Please continue to refer to Figure 1a The capsule compartment 4 is located below the suction nozzle 2. The capsule compartment includes a cover plate 41 and a cavity 42 integrally formed with the cover plate 41, and the cavity 42 is used to accommodate the capsule. In the embodiment, the capsule is in a roughly upright state when placed in the cavity 42, that is, one end of the capsule is located at the bottom of the cavity 42, and one end of the capsule is adjacent to the top of the cavity 42. The integral molding between the cover plate and the cavity enables a seamless connection between the two and reduces the manufacturing cost and difficulty. It should be emphasized that in the present application, since the cover plate 41 and the cavity 42 of the capsule compartment are an integral structure, this not only reduces the material and production costs; more importantly, even with the increase in the patient's use time or the increase in the number of frequent opening and closing, there will be no gap between the capsule compartment and the capsule compartment cover plate, thereby ensuring that when the patient inhales, especially when the patient inhales the medicine, the airflow can ensure the inhalation efficiency, thereby ensuring the drug administration efficiency and effect.

[0086] The cover plate 41 is located above the chamber 42 and is provided with a capsule insertion port 411. The capsule insertion port 411 is connected to the chamber 42. In use, the patient places a capsule into the chamber 42 through the capsule insertion port 411.

[0087] In the present application, the connectivity refers to being connected in space so that the airflow or the drug powder carried by the airflow can pass through. In some expressions, the connectivity is also used as connection, both referring to the spatial connection of two physical spaces.

[0088] On the other hand, the capsule insertion port 411 corresponds to and integrates with the mesh portion 32, ensuring a tight fit to ensure efficient inhalation. The cover plate 41 and chamber 42 are integrally formed to facilitate manufacturing, eliminating the need for assembly between the cover plate 41 and chamber 42. It should be noted that the capsule is not necessarily part of the inhalation device. In some cases, to prevent moisture from getting inside the capsule, the capsule is removed and placed back into the capsule compartment to absorb the drug powder.

[0089] The piercing assembly is a component for piercing the capsule in the capsule compartment. The piercing assembly 5 is located on one side of the capsule compartment 4. The piercing assembly 5 includes a button 51 and a puncture needle 52. The button 51 can move relative to the capsule compartment. The chamber of the capsule compartment 4 is provided with a channel for the puncture needle to pass through. In the use state, when pressing force is applied to the button, the button moves relative to the capsule compartment while driving the puncture needle 52 to pierce the capsule in the chamber 42. In this application, relative motion refers to the movement of multiple components relative to each other, closer or farther away. Therefore, here, the button can move relative to the capsule compartment means that the button can move closer to or farther away from the capsule compartment.

[0090] The base is used to accommodate the capsule compartment and serves as a part of the airflow channel, as well as a dust-proof component that is easy for the user to hold and operate. The base 6 includes a seat body 61, and the interior of the seat body 61 is a hollow structure for accommodating the chamber 42 of the capsule compartment and part of the piercing component 5.

[0091] In the usage of this embodiment, first open the cover body 1 and the suction nozzle 2, place the capsule in the capsule insertion port 411 of the capsule compartment 4, and the capsule enters the chamber 42 from the capsule insertion port 411. Then cover the suction nozzle 2 on the cover plate 41 of the capsule compartment 4 to connect the inhalation channel 22 with the capsule insertion port 411, and then drive the needle 52 through the button 51 to pierce the capsule in the chamber 42 to form a medicine powder outlet on the capsule. At this time, the user holds the upper part of the suction nozzle with his mouth and inhales, generating negative pressure in the inhalation channel. Since the diameter of the medicine powder is very fine, it can leave the capsule through the medicine powder outlet of the capsule under the action of negative pressure and enter the inhalation channel 22 through the filter 3 and be inhaled into the user's body, while any capsule debris that may be generated is blocked by the filter 3 and does not enter the inhalation channel.

[0092] It should be understood that the terms "proximal" and "distal" used in this application are relative to the piercing assembly. Therefore, in each embodiment of this application, for the convenience of description, the side of the inhalation device close to the piercing assembly is defined as the proximal side, and the side away from the piercing assembly is defined as the distal side. Figure 1aThe side where the numbers 7, 19, 29, 49, and 69 are located is the distal side, and the opposite side is the proximal side. In addition, the terms "front" and "rear" used in this application are for the convenience of explanation in terms of the viewing direction shown in the figure. Specifically, the "front" in this application is defined as the left side in the direction of the axis 7 based on the direction of the piercing assembly, that is, Figure 1a The side closer to the viewing direction shown in the figure; "rear" in this application is defined as the right side in the direction of the axis 7 based on the direction of the piercing assembly, that is, Figure 1a The side of the device that is farther from the viewing direction shown in the diagram. It should also be understood that, for ease of description, spatial terms such as "top surface" and "bottom surface" are used in this application based on the placement of the inhalation device shown in the diagram. However, since surgical medical devices can be used in a variety of orientations and positions in various usage scenarios, these spatial terms are not restrictive or absolute.

[0093] In an exemplary embodiment, for ease of use, the cover, the suction nozzle, the capsule compartment, and the distal side of the base are coaxially connected via a hinge.

[0094] For possible implementations, please see Figure 1a , hinge parts (19, 29, 49, 69) are provided on the distal sides of the cover body 1, the suction nozzle 2, the capsule compartment 4, and the base 6, and the cover body 1, the suction nozzle 2, the capsule compartment 4, and the base 6 are coaxially hinged by passing the shaft 7 through their respective hinge parts, such as Figure 1a As shown, the cover 1, the nozzle 2, the capsule compartment 4, and the base 6 are hinged by an axis 7 passing through their respective hinge parts; in the use state, the hinged state of the cover 1, the nozzle 2, the capsule compartment 4, and the base 6 is as shown. Figure 1b As shown, Figure 1b Shown is a schematic diagram of the hinged relationship between the cover, nozzle, capsule compartment and base in one embodiment of the present application.

[0095] In an exemplary embodiment, in order to prevent the cover from becoming loose and failing to protect the nozzle when not in use, a matching snap-fit ​​structure is provided between the cover and the cover plate, so that the cover is opened by the snap-fit ​​structure to expose the nozzle when in use, and the cover is closed to cover the nozzle when not in use.

[0096] In one embodiment, the proximal side of the cover plate is provided with a structure that cooperates with the first engaging portion. The specific structure of the first engaging portion can be designed based on the engagement method between the cover body and the cover plate. For example, the first engaging portion can be a raised structure, and the proximal side of the cover plate can correspondingly have an inclined surface that cooperates with the raised structure. Alternatively, the first engaging portion can be a hook-shaped structure, and the proximal side of the cover plate can correspondingly have a raised structure that engages with the hook-shaped structure.

[0097] See also Figures 4 to 6 ,in, Figure 4 Shown is a schematic structural diagram of the cover in one embodiment of the present application. Figure 5 Shown is a schematic structural diagram of a capsule compartment in one embodiment of the present application. Figure 6 The diagram shows the structure of the cover and capsule compartment in one embodiment of the present application. Figure 4 As shown, the proximal side of the cover is provided with a first engaging portion 11, which is a convex structure formed on the inner wall surface of the proximal end of the cover. Figure 5 As shown, the lower surface of the proximal end of the cover plate has a slope 45. Figure 6 As shown, when the cover is closed, the first engaging portion 11 contacts the edge of the cover plate. When force is continued to be applied, the first engaging portion 11 moves downward and engages with the inclined surface 45 of the cover plate. When the cover needs to be opened, an upward force is applied to the cover, and the first engaging portion 11 moves upward along the inclined surface 45 and separates from the cover plate.

[0098] In the embodiment, to facilitate opening the cover during use, please refer to Figure 7 , which is a schematic structural diagram of the cover in another embodiment of the present application, wherein the cover is further provided with a first anti-slip portion 12 on the proximal side. Figure 7 In the embodiment shown, the first anti-slip portion can be a plurality of raised or recessed textures formed on the proximal side of the cover body to form an anti-slip structure; of course, in other embodiments, the first anti-slip portion can also be a plurality of anti-slip structures or materials such as silicone strips arranged on the proximal side of the cover body.

[0099] In an exemplary embodiment, please refer to Figure 2 As shown in the figure, the nozzle body 21 includes a mouthpiece 211 and a mounting portion 212. The mounting portion 212 is used to engage with the cover of the capsule compartment so that the nozzle and the capsule compartment can be connected by an engagement connection, and in the engaged state, the filter element can be tightly fitted to the capsule insertion port of the cover. Figure 2 As shown, the mouthpiece has an approximately flat elliptical structure adapted to the human oral cavity (mouth), making it convenient for the user to hold the upper part of the mouthpiece with his mouth, so as to form a negative pressure in the suction channel of the mouthpiece by inhaling when the user's mouth wraps around the upper part of the mouthpiece.

[0100] The mounting portion 212 and the mouthpiece 211 are integrally formed. Since the mounting portion mates with the cover plate, while the mouthpiece mates with the user's mouth during use, the mounting portion and the mouthpiece have different shapes to better conform to ergonomics. To this end, a transition surface is provided between the mounting portion 212 and the mouthpiece 211 to transition from the approximately flat, elliptical structure of the mouthpiece 211 to the mounting portion structure that mates with the shape of the cover plate.

[0101] In an exemplary embodiment, the suction nozzle includes a second locking portion located on the proximal side, and the cover plate includes a third locking portion located on the proximal side, and the second locking portion and the third locking portion cooperate at the proximal end to achieve locking between the cover plate and the suction nozzle.

[0102] For possible implementations, please see Figure 2 and combined Figure 8 and Figure 9 ,in, Figure 8 Shown is a schematic diagram of a cover plate in one embodiment of the present application, Figure 9 The diagram shows the engagement state of the nozzle and capsule compartment in one embodiment of the present application. Figure 2 and Figure 9 As shown, the second engaging portion 23 is a hook structure formed on both sides of the lower surface of the nozzle, as shown in FIG. Figure 8 and Figure 9 As shown, the third engaging portion 43 is a snap-in notch located on either side of the proximal end of the cover plate and corresponding to the hook structures on both sides of the nozzle. The snap-in notch is formed on both sides of the cover plate. When the hook on the lower surface of the nozzle contacts the edge of the notch, it deforms slightly under stress. Once the hook is located below the notch, it recovers its deformation and becomes fixed below the edge of the notch, achieving engagement between the nozzle and the capsule compartment. The snap-in structure in this embodiment allows the filter element installed at the bottom of the nozzle's tubular structure to fit perfectly with the capsule insertion port of the cover plate, allowing the powdered medicine to be inhaled into the patient's lungs completely in accordance with the airflow when the patient inhales.

[0103] In one embodiment, please continue to refer to Figure 2 In order to facilitate the engagement or separation of the nozzle and the cover, the nozzle has a second anti-slip portion 24 on both sides of the near side. Figure 2 In the embodiment shown, the second anti-slip portion can be a plurality of raised or recessed textures formed on both sides of the proximal side of the suction nozzle to form an anti-slip structure; of course, in other embodiments, the second anti-slip portion can also be a plurality of anti-slip structures or materials such as silicone strips arranged on the proximal side of the suction nozzle.

[0104] In an exemplary embodiment, in order to facilitate the communication between the suction channel and the chamber, the bottom end of the tubular structure extends out of the suction nozzle body. When the suction nozzle and the cover plate are engaged, the filter element on the tubular structure is pressed against the capsule insertion port. Furthermore, the contact surface between the filter element and the capsule compartment has an end surface of a matching shape, so that when the suction nozzle and the capsule compartment are engaged, the filter element can be pressed against the capsule insertion port and fit tightly against each other to avoid leakage of airflow during use.

[0105] For possible implementations, see Figure 10, which shows a schematic diagram of the structure of the filter element and capsule compartment in one embodiment of the present application. As shown in the figure, the lower outer surface of the filter element has a stepped structure formed by the transition between the shape of the sleeve portion and the screen portion. Correspondingly, the upper inner surface of the capsule insertion opening 411 of the cover plate has a shape that corresponds to this stepped structure, thereby ensuring a tight fit between the filter element and the capsule insertion opening. When the suction nozzle and the cover plate are engaged, the entire screen portion is located in the capsule insertion opening 411. As a result, when inhaling drug powder, the negative pressure can better pass through the screen portion to generate an ideal flow direction, ensuring efficient drug powder inhalation.

[0106] In some embodiments, since the suction nozzle is engaged with the third engaging portion of the cover plate through the second engaging portion, the filter element is further closely attached to the capsule insertion opening, so that the airflow efficiency during use is higher, ensuring effective inhalation of the drug powder.

[0107] In an exemplary embodiment, a first annular fitting portion is formed on the outer surface of the bottom end of the tubular structure, and a second annular fitting portion is formed on the inner surface of the sleeve portion of the filter element. The first annular fitting portion is used to be engaged with the second annular fitting portion.

[0108] For possible implementations, see Figure 11 、 Figure 12a 、 Figure 12b and combined Figure 2 ,in, Figure 11 Shown is a schematic structural diagram of the filter element in another embodiment of the present application, Figure 12a Shown is a schematic structural diagram of the filter element and the nozzle in one embodiment of the present application. Figure 12b Shown is a cross-sectional view of the filter element and the nozzle in one embodiment of the present application. Figure 2 As shown, the inner surface of the sleeve portion of the filter element has a circle of protruding ribs 221, correspondingly, as shown in FIG. Figure 11 As shown, the outer surface of the bottom end of the tubular structure has an annular groove 311 that matches the protruding rib, so that when the filter 3 is installed on the tubular structure of the suction nozzle 2, the protruding rib 221 can be fixed in the annular groove 311, as shown in FIG. Figure 12a shown. Figure 12b It is a schematic cross-sectional view of the structure after the filter element 3 is installed on the tubular structure.

[0109] It should be noted that, although the matching structure of the protruding ribs and the annular grooves is used as an example in this embodiment, it is not limited to this in actual application. As long as the locking effect of the filter element and the tubular structure can be achieved, it can be used. For example, in other embodiments, the circle of protruding ribs in the above embodiment can be replaced by a number of protrusions formed on the inner surface of the filter element sleeve, and the annular groove can be replaced by a number of recessed holes formed on the outer surface of the tubular structure and corresponding to the number of protrusions. Moreover, the positions of the protruding ribs and the annular grooves, or the protrusions and the recessed holes can also be interchanged. For example, the inner surface of the sleeve of the filter element can be an annular groove and the outer surface of the bottom end of the tubular structure can be a circle of protruding ribs, or the inner surface of the sleeve of the filter element can be a number of recessed holes and the outer surface of the bottom end of the tubular structure can be a number of corresponding protrusions, etc., which will not be elaborated here.

[0110] In this embodiment, the fixing structure between the first annular sleeve portion and the second annular sleeve portion can firmly combine the filter element and the tubular structure, thereby ensuring efficiency and safety in use.

[0111] In an exemplary embodiment, see Figure 13 , which shows a schematic structural diagram of another embodiment of the filter element in this application. As shown in the figure, to ensure the inhalation efficiency of the medicinal powder, the thickness t of the screen portion 32 is 0.35 to 0.51 mm, where the thickness includes the distance between the lowest point and the highest point of the screen portion. In addition, to ensure both filtration effectiveness and inhalation efficiency, the mesh size of the screen portion should also be reasonably designed. It should be understood that the mesh size includes the number of holes in the screen portion, and the size of the holes directly constitutes the limit on the diameter of objects that can pass through the screen portion. Therefore, the mesh size is related to the size of the filter object and the airflow. In different embodiments, the mesh size is configured to be approximately 20 to 30, for example, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30. In this embodiment, the thickness t of the mesh portion 32 is 0.35-0.51 mm, the cross-sectional diameter of the filter element is 11-12 mm, and the number of meshes is 21.

[0112] The filter element of the present application can control the distribution of the flowing airflow by means of the size, shape and surface curvature of the mesh aperture, and can also prevent the patient from inhaling large pieces of broken capsule shells when vigorously inhaling the drug powder.

[0113] In certain embodiments, the integrally molded filter element may be made of a polymeric structural material, including but not limited to ABS (Acrylonitrile Butadiene Styrene plastic), PC (Polycarbonate), PA (Polyamide), etc. In this embodiment, the filter element is made of ABS to prevent deformation due to improper use. Moreover, since ABS is a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S), it combines the properties of the three components: acrylonitrile has high hardness and strength, heat resistance, and corrosion resistance; butadiene has impact resistance and toughness; and styrene has a high surface gloss, easy coloring, and easy processing. This makes the filter element high in strength, good in toughness, low in cost, and easy to process and mold. Furthermore, the polymeric structural material will not deform or rust in a humid environment, thereby ensuring the stability of the screen structure.

[0114] In an exemplary embodiment, see Figure 15 , which shows a schematic diagram of the structure of the capsule compartment in one embodiment of the present application (bottom view). As shown in the figure, the cover includes side wings 412 located on both sides, and the side wings 412 are provided with fourth engaging portions 4121. Here, the fourth engaging portions are protrusions located on both sides of the side wings. Figure 14a , which shows an enlarged schematic diagram of a partial structure of the base in one embodiment of the present application, wherein the upper edges of both sides of the base 6 are provided with fifth engaging portions 62 corresponding to the fourth engaging portions 4121. Figure 14b , which is shown in this application Figure 14a The enlarged view of the local structure of the middle A part, here, in order to clearly show the structure of the fifth engaging part, Figure 14a Based on the rotation of a certain angle and the enlargement of the position of the fifth engaging portion 62 to obtain Figure 14b As shown in the figure, the fifth engaging portion includes a sloped surface 621 and a slot 622 located below the sloped surface 621. When the cover is engaged, the fourth engaging portion 4121, which is a protrusion, contacts the sloped surface 621 and then moves downward and engages in the slot 622, thereby engaging the capsule compartment with the base.

[0115] In one embodiment, please continue to refer to Figure 14a The upper edges on both sides of the base body 61 of the base 6 have inward folded edges 611. When the cover is installed on the base body, the side wings 412 on both sides of the cover rest on the folded edges 611. On the one hand, it can prevent the cover from being misplaced, and on the other hand, it also provides support for the front and rear sides of the base, thereby increasing the compressive strength of the base in the front and rear directions.

[0116] In one exemplary embodiment, to form an airflow channel within the inhalation device, the capsule compartment requires not only communication with the inhalation channel of the mouthpiece but also an additional channel connected to the outside air. This additional channel allows air to enter the capsule compartment when the user holds the mouthpiece. Because the capsule compartment is secured to the base via a cover plate, a first air inlet is provided on the cover plate. When negative pressure is generated within the inhalation channel, external air is facilitated to enter the interior space of the base via the first air inlet, providing external air to the capsule compartment.

[0117] In one embodiment, to facilitate processing and forming, the first air inlet may be a notch formed on the cover plate profile. For example, please continue to refer to Figure 15 As shown in the figure, the contours on both sides of the far side of the cover are narrower than the contours of the cover's side wings, thereby forming a notch 413. After the cover is snapped onto the base, the side wings snap into place with the upper portion of the base body, leaving a gap between the base body and the notch 413 to serve as an inlet channel for external air. It should be noted that although the notches formed on both sides of the far side of the cover are used as an example in this embodiment, other structures can also be used in actual applications, as long as the first air inlet is exposed after the nozzle cover is snapped onto the capsule compartment so that air can enter through the first air inlet during use.

[0118] In an exemplary embodiment, the chamber 42 of the capsule compartment includes a main chamber. In order to keep the capsule in a vertical position in the main chamber so as to be pierced by the piercing assembly, the diameter of the main chamber is larger than the transverse cross-sectional diameter of the capsule and smaller than the longitudinal cross-sectional diameter of the capsule. Figure 17 , which shows a schematic diagram of the structure of the capsule compartment and capsules in one embodiment of the present application. As shown, the transverse diameter D1 of the main chamber 421 is larger than the transverse cross-sectional diameter D3 of the capsule 8, allowing the capsule 8 to enter the main chamber. Furthermore, the transverse diameter D1 of the main chamber 421 is smaller than the longitudinal cross-sectional diameter D2 of the capsule 8, allowing the capsule 8 to remain upright in the main chamber 421. In a possible embodiment, the ratio of the transverse diameter to the longitudinal diameter of the main chamber is 1:2 to 1:3.

[0119] It should be noted that in this embodiment, the size of the capsule is not limited and can be of any size. To accommodate the capsule size, the diameter of the main chamber can also be configured to match the capsule size. The size of the capsule is generally related to the dosage of the medication. For example, when the amount of powder is large, the capsule size is designed to be larger, and when the amount of powder is small, the capsule size is designed to be smaller.

[0120] In one embodiment, considering the current dosage of powdered drugs, such as the aforementioned tiotropium bromide and indacaterol, the transverse cross-sectional diameter D3 of the capsule 8 is generally designed to be 5-6 mm, and the height, i.e., the longitudinal cross-sectional diameter D2, is designed to be 15-16 mm. In addition, in some embodiments, since the capsule is assembled from two upper and lower shells, please refer to Figure 26 , which is a schematic structural diagram of the capsule in one embodiment of the present application. The outer shell of the capsule is assembled by an upper shell 8a and a lower shell 8b. Usually, the sum of the longitudinal cross-sectional diameters of the upper shell 8a and the lower shell 8b is designed to be 16 to 17 mm.

[0121] In an exemplary embodiment, please refer to Figure 17 The bottom of the capsule compartment chamber 42 is provided with a secondary chamber 422 connected to the main chamber 421. The secondary chamber 422 is used to provide an air inlet for the main chamber 421. The bottom of the secondary chamber 422 has a second air inlet. To ensure that the capsule compartment can communicate with the interior of the base body to form an air inlet after being engaged with the base body, a gap is provided between the second air inlet and the bottom surface of the base. Furthermore, to prevent the capsule from falling from the main chamber into the secondary chamber, the diameter D4 of the secondary chamber is smaller than the transverse cross-sectional diameter D3 of the capsule.

[0122] In an exemplary embodiment, the chamber of the capsule compartment includes a mounting structure that cooperates with the piercing assembly, so that the piercing assembly remains connected to the capsule compartment when not in use, and can move relative to the capsule compartment to pierce the capsule in the capsule compartment when in use. The mounting structure includes a mounting plate, which can be an integral structure with the chamber. The mounting plate is provided with a slot for allowing the button of the piercing assembly to move relative to the capsule compartment and not to separate from the capsule compartment, and a tube portion that limits the insertion direction of the puncture needle of the piercing assembly. In some embodiments, in order to apply force to the piercing assembly during use so that it can automatically return to its initial position after piercing the capsule, the piercing assembly further includes a reset mechanism, and the reset mechanism includes, for example, but is not limited to, an elastic element such as a spring; and an abutment portion is provided at the position of the reset mechanism on the mounting plate to limit the position of the reset mechanism and ensure its normal operation. The arrangement positions of the slot, the abutment portion, and the tube portion can be determined according to the structure of the piercing assembly. For example, when the piercing assembly is movably connected to the mounting plate through the left and right sides of the button member, the piercing assembly cooperates to pierce the capsule in the capsule compartment through two puncture needles arranged upper and lower, and the reset mechanism is arranged between the two puncture needles, the slots can be correspondingly opened on the left and right sides of the mounting plate, the abutment portion can be located between the symmetrical slots, and the two tube portions corresponding to the two puncture needles can be respectively located on the upper and lower sides of the abutment portion.

[0123] In an exemplary embodiment, a first stop is further provided at the position of the capsule compartment facing the button member to limit the movement position of the piercing assembly relative to the capsule compartment. The first stop can be located on the main chamber or on the sub-chamber, and the length of the first stop is configured to match the ideal travel range of the button member, that is, when the button member is pressed, it stops when it touches the first stop, and the puncture needle can just pierce the capsule without excessive puncture. Therefore, when the first stop is located on the sub-chamber, since the transverse diameter of the sub-chamber is smaller than the transverse diameter of the main chamber, the length of the first stop located on the sub-chamber should be slightly larger than the length of the first stop when it is located on the main chamber. In an embodiment in which the capsule compartment includes a mounting plate, the first stop can also be provided on the mounting plate.

[0124] In one embodiment, see Figure 16 , which is a structural schematic diagram of the piercing assembly and capsule chamber in the present application in another embodiment. As shown in the figure, a first stop portion 423 is provided on the side facing the button member below the main chamber. The first stop portion 423 is located on the mounting plate. When the button member is pressed, the bottom of the button member hits the first stop portion 423 and cannot continue to move distally, thereby avoiding excessive piercing.

[0125] In one embodiment, the piercing assembly may include one or more puncture needles, with the proximal end of each puncture needle fixedly connected to the button member. The position and number of the tubes on the mounting plate correspond to the position and number of the puncture needles. After the piercing assembly is mounted on the capsule compartment, the puncture needles are inserted into corresponding tubes on the mounting plate, i.e., the distal ends of each puncture needle are located within the corresponding tube. When force is applied to the button member, the puncture needles move along the tubes, extending into the chamber and puncturing the capsule therein.

[0126] The needle is used to puncture the capsule. It is not necessarily an elongated structure; it can also be a thin, blade-like structure. For example, the needle can be designed to be flat, similar to a blade. Accordingly, the tube portion on the mounting plate can be adjusted to a flat tube structure to enable the blade-like needle to move within the tube. In this embodiment, when the needle punctures the capsule, it creates a larger opening in the capsule or directly cuts the capsule in half or more.

[0127] In a possible embodiment, to ensure that each needle is fully functional and improve drug release efficiency, the distance between the two needles furthest apart should be less than the capsule height and greater than half the capsule height. For example, when two needles are used, the distance between them should be less than the capsule height and greater than half the capsule height. For example, when the needles pierce the capsule, the puncture site is located at the transition point between the main body and the top portion at each end of the capsule. In this embodiment, the distance between the holes formed in the capsule after the needles pierce the capsule is 3 / 5 to 4 / 5 of the assembled capsule height.

[0128] The arrangement of the needles can be configured based on the orientation of the capsule and the number of needles. For example, if there is only one needle, it can be placed at the center of the capsule; if there are two needles and the capsule is placed vertically, the two needles can be placed one above the other; if there are two needles and the capsule is placed horizontally, the two needles can be placed left and right; if there are three or more needles, the needles can be aligned or not aligned. It should be understood that the above needle placement is for illustrative purposes only and is not intended to be limiting. In actual applications, they can be adjusted according to specific needs and will not be detailed here.

[0129] In an exemplary embodiment, see Figure 18 , which shows a schematic diagram of the structure of a needle in one embodiment of the present application. As shown, to facilitate capsule puncture and minimize the generation of capsule debris, the needle 52 has a beveled tip. The tip is positioned eccentrically, meaning that the tip is not aligned with the needle's axis. When piercing the capsule shell, fragments at the rupture site are less likely to fall from the capsule, fundamentally preventing the generation of capsule debris and ensuring safe and comfortable inhalation. This structure also effectively releases the powdered drug during inhalation.

[0130] In one embodiment, in order to facilitate the movable connection of the piercing assembly to the mounting plate, the button member of the piercing assembly includes a pressing portion and a movable connection portion, the pressing portion and the movable connection portion are an integrated structure, and the distal end of the movable connection portion has a limiting portion that cooperates with the card slot, so that the piercing assembly can move relative to the capsule chamber but not separate from the mounting plate.

[0131] For possible implementations, see Figure 19 , which is a schematic diagram of the structure of the button member in one embodiment of the present application, as shown in FIG. Figure 19As shown, the button member 51 includes an integrally formed pressing portion 510 and a movable connecting portion. In this embodiment, the movable connecting portion is an extension arm 511 extending distally on both sides of the button member 51. The distal end of the extension arm 511 is provided with an outwardly protruding hook portion 512 as a limiting portion, and the hook portion and the extension arm are an integral structure.

[0132] Please refer to Figure 9 Two slots 441 are defined on the mounting plate 44. These slots 441 are positioned to correspond to the extension arms 511, and their width is slightly greater than that of the extension arms 511, allowing the extension arms 511 to slide within the slots. Furthermore, the combined width of the hook portion 512 and the extension arms 511 is greater than the slots 441, ensuring that the extension arms do not disengage from the mounting plate while sliding within the slots 441.

[0133] In some cases, see Figure 20a 、 Figure 20b and combined Figure 9 , Figure 20a Shown is a structural diagram of a button member in another embodiment of the present application, Figure 20b for Figure 20a In the enlarged schematic diagram of the G portion in the figure, as shown in the figure, in order to further facilitate the assembly of the piercing assembly 5 to the mounting plate 44, the hook portion 512 has a slope s, the distance between the slope s and the extension arm 511 increases from the distal side to the proximal side, and the minimum width h at the slope e1 Smaller than the width h of the slot 441 g , the maximum width h at the slope e2 Slightly larger than the width h of the slot 441 g Here, Figure 20b As shown, the minimum width h at the slope e1 Including the width of the hook distal end and the distal end of the extension arm, the maximum width h at the inclined surface e2 Based on this structural design, when installing, align the distal end of the extension arm 511 with the slot 441 on the mounting plate 44. Due to the minimum width h at the inclined surface, e1 Smaller than the width h of the slot 441 g , so that the extension arm 511 can pass through the slot, and as the width of the inclined surface increases, the inclined surface gradually sticks to the edge of the slot 441. After continuing to apply force, the slot 441 will exert pressure on the inclined surface, and the extension arm will produce a slight elastic deformation under pressure. Finally, when the entire hook portion 512 passes through the slot 441, the inclined surface returns to its initial state and the piercing assembly is limited by the hook portion 512, so that the piercing assembly can move relative to the capsule compartment but does not separate from the mounting plate.

[0134] It should be noted that the limiting portion structure in this embodiment is only an example and not a limitation. In actual applications, the limiting portion may also be other structures as long as it can allow the button to pass through the mounting plate and be limited thereon, for example Figure 20a 、 Figure 20b The hook portion in the middle can also be replaced by a plurality of small hooks distributed on the far side of the extension arm as a limiting portion, etc.

[0135] See also Figure 21 and combined Figure 9 ,in, Figure 21 Shown is a schematic diagram of the structure of the piercing component in another embodiment of the present application. In this embodiment, please refer to Figure 21 There are two needles 52 arranged in an upper and lower position. Both needles 52 are located between the front and rear extension arms 511 and are fixed to the button 51 through the proximal side. Figure 9 Two tubes 443 are provided on the mounting plate 44 of the capsule compartment, corresponding to the two puncture needles. Thus, the two tubes 443 are also arranged one above the other on the mounting plate 44. The tubes 443 communicate with the chamber 42 of the capsule compartment 4. After the puncture assembly 5 is installed in the capsule compartment, the puncture needles are inserted into the tubes 443, i.e., the distal ends of the puncture needles 52 are located in the two tubes 443. When force is applied to the button 51, the puncture needles 52 can move along the tubes 443 to penetrate the chamber 42 and puncture the capsules therein. The insertion means that the diameter of the puncture needle is smaller than that of the tubes, allowing it to pass through the hollow portion of the tubes. Furthermore, to facilitate the movement of the puncture needle along the tubes, a portion of the puncture needle, such as the distal end of the puncture needle, can be located within the tubes in the initial state (i.e., when no force is applied to the button).

[0136] In order to apply force to the piercing assembly during use so that it can automatically return to its initial position after piercing the capsule, the piercing assembly also includes a reset mechanism 53, and examples of the reset mechanism 53 include but are not limited to a spring. In addition, a support portion 442 is provided at the position corresponding to the reset mechanism 53 on the mounting plate 44 to limit the position of the reset mechanism to ensure its normal operation. Here, the support portion 422 can be a mounting seat for fixing the reset mechanism 53. For example, when the reset mechanism is a spring, the support portion 422 can be a spring mounting seat protruding toward the proximal side, so that the distal side of the spring can be sleeved on the mounting seat. Figure 9 In the illustrated embodiment, considering the efficient use of space on the mounting plate, the abutment portion 442 is positioned at the center of the mounting plate, i.e., between the left and right retaining grooves 441 and between the upper and lower tube portions 443. Of course, in other embodiments, the reset mechanism can be positioned elsewhere, as long as the button member can be reset upon application of force. The structure of the abutment portion can also be designed based on actual needs and is not limited to a proximal protruding spring mounting seat. For example, the abutment portion can also be a recessed portion formed on the surface of the mounting plate, into which the reset mechanism is mounted.

[0137] It should be noted that in the above embodiment, the capsule compartment is designed as a vertical structure so that the capsules can be placed in a vertical position. In other possible embodiments, the capsule compartment can also be designed as a horizontal structure so that the capsules can be placed in a horizontal position. Accordingly, the needles in the piercing assembly and the tubes on the mounting plate are configured to be arranged left and right to match the placement direction of the capsules to facilitate piercing the capsules.

[0138] In one embodiment, please continue to refer to Figure 22 , which shows a schematic structural diagram of the button member in one embodiment of the present application. As shown in the figure, in order to facilitate pressing the button portion, a third anti-slip portion 513 is provided on the outer surface of the pressing portion, so that when force is applied through the button member 51, the force can be transmitted more effectively. Among them, considering that the user usually presses the button member with the thumb during use, the third anti-slip portion is designed as a concave structure with an arc-shaped outer edge surface as shown in Figure E to adapt to the human finger shape. It should be understood that the third anti-slip portion in this embodiment is only an example and not a limitation. In actual applications, the third anti-slip portion can also be a plurality of raised or recessed textures formed on the proximal side of the cover body to form an anti-slip structure; of course, in other embodiments, the third anti-slip portion can also be a plurality of anti-slip structures or materials such as silicone strips provided on the proximal side of the cover body.

[0139] In an exemplary embodiment, to further ensure the stability of the needle's movement when the puncture assembly punctures the capsule, corresponding guide structures are provided on the cover plate and the button. The guide structure is designed to maintain linear motion of the button under load, thereby driving the needle's movement more stably and preventing the needle from deviating or causing resistance when pressed due to the unstable movement of the button.

[0140] Since the consistency and stability of the puncture direction of the needle when puncturing the capsule (or breaking the capsule wall) are particularly important for the inhalation device, based on this, in the embodiment of the present application, a first guide portion is provided on the side of the cover corresponding to the button member, that is, the proximal lower surface of the cover member, and the button member is provided with a second guide portion that cooperates with the first guide portion, so that when the button member moves toward the capsule compartment, the two needles can be guided to move stably on the horizontal line during the process of pushing the button to puncture the capsule, so as to ensure that the shape and size of the hole on the capsule shell remain relatively consistent after the capsule is punctured by the needle, which not only ensures that the drug powder in the capsule compartment can escape smoothly under the action of negative pressure, but also prevents the generation of capsule skin debris during the puncture process due to the shaking of the puncture needle.

[0141] The first guide portion and the second guide portion may comprise a guide rail and a guide groove, or a limit groove and a guide block, etc. For example, the first guide portion may comprise a guide rail formed on the proximal lower surface of the cover plate, and the second guide portion may comprise a guide groove provided on the upper surface of the button member, or the second guide portion may comprise a guide rail formed on the proximal lower surface of the cover plate, and the first guide portion may comprise a guide groove provided on the upper surface of the button member.

[0142] In one embodiment, see Figure 23 , which shows a schematic structural diagram of the piercing assembly and capsule chamber in another embodiment of the present application. As shown in the figure, two slender guide rails 415 are provided on the proximal lower surface of the cover plate. Correspondingly, an upward extension arm is provided on the upper side of the button member. A guide groove 514 is provided on the extension arm at a position corresponding to the guide rail 415. When force is applied to the button member, the guide groove 514 on the button member can move along the guide rail 415 of the cover plate, thereby better controlling the movement direction of the button member, so as to drive the puncture needle to pierce the capsule in the capsule chamber more accurately and efficiently. In another embodiment, the positions of the guide rails and the guide grooves can also be interchanged, that is, the guide rails can be located on the button member and the guide grooves can be located on the lower surface of the cover plate, which can also achieve similar technical effects.

[0143] In another embodiment, limiting blocks may be provided on both sides of the proximal lower surface of the cover plate, and the movable connection portion of the button member may extend upward to contact the cover plate, and the movable connection portions on both sides of the button member are located between the two limiting blocks on the cover plate and abut against the limiting blocks, so that when force is applied to the button member, the movable connection portion of the button member may move stably due to the limiting action of the limiting blocks, thereby driving the needle to puncture the capsule in the capsule compartment more accurately and efficiently.

[0144] It should be noted that the structures of the first guide portion and the second guide portion in the above embodiment are only examples and not limitations. In actual applications, it is sufficient as long as they can guide the button member to maintain stable movement; in addition, the setting positions of the first guide portion and the second guide portion can also be adjusted according to specific needs, which will not be elaborated here.

[0145] In an exemplary embodiment, to prevent excessive puncture of the capsule when the button is pressed, the cover plate further includes a third stopper, which is a stopper structure located on the cover plate and used to limit the range of movement of the button relative to the cover plate, including but not limited to a stopper, a baffle, and other structures. Figure 23 As shown in the figure, the third stop portion is a protrusion 416 formed at the distal end of the first guide portion, so that when the button member moves along the cover plate, after the button member abuts against the protrusion, it is limited by the protrusion and cannot continue to advance, thereby limiting the movement position of the piercing assembly relative to the capsule compartment.

[0146] In an exemplary embodiment, please refer to Figure 14a As shown in the figure, an opening 613 is provided at the proximal end of the base, so that after the capsule compartment is assembled into the base, the opening 613 provides installation space and movement space for the piercing component, so that the piercing component can move along the capsule compartment under force.

[0147] In one embodiment, a second stopper may be provided on the base body. The second stopper is a stopper structure located on the base and used to limit the range of movement of the button relative to the base, including but not limited to a stopper, a baffle and other structures. In this embodiment, please continue to refer to Figure 14a A baffle 612 is provided on the proximal lower side of the base body. The baffle 612 has an upwardly protruding stopper 6121 on the distal side. The portion of the baffle 612 outside the stopper is defined as the baffle body 6120. The baffle body 6120 is lower than the lower surface of the button member, allowing the button member to pass through, while the stopper 6121 is higher than the lower surface of the button member, preventing the button member from passing through. Therefore, when pressure is applied to the button member, the button member first moves along the top surface of the baffle body 6120 toward the capsule compartment. When the button member contacts the stopper 6121, it cannot continue to move toward the capsule compartment. This controls the depth of the needle's penetration into the capsule by limiting the movement of the piercing assembly relative to the capsule compartment.

[0148] In an exemplary embodiment, in order to facilitate observation of the status of the capsule in the capsule compartment during operation, the base further includes a transparent window mounted on the base body, and the chamber of the capsule compartment is also made of a transparent material, so that the status of the capsule in the chamber and the status of the capsule wall being broken during insertion can be observed through the transparent window and the transparent chamber during use.

[0149] The position of the transparent window on the base can be designed according to actual needs. For example, the transparent window can be arranged on the front and back sides of the base.

[0150] In one embodiment, see Figure 24 , which shows a schematic diagram of the structure of the base in the present application in another embodiment. As shown in the figure, to facilitate the installation of the transparent window and the base, the transparent window 63 can be configured as a U-shaped structure. Correspondingly, the bottom surface of the base body 61 of the base is provided with mounting grooves extending to the front and rear sides of the base body. The two long arms 63a and 63b of the U-shaped structure correspond to the mounting grooves of the front and rear parts of the base body 61 respectively, and the bottom plate 63c of the U-shaped structure corresponds to the mounting groove of the bottom surface of the base body 61, thereby mounting the U-shaped transparent window on the base 6. In the embodiment, the U-shaped transparent window 63 is mounted on the base 6 by hot melting or gluing; alternatively, the U-shaped transparent window 63 can be integrally formed with the base 6.

[0151] In other embodiments, the base may also be made of transparent material or partially transparent material (for example, the window portion is made of transparent material), so that the state of the capsule in the cavity and the state of the capsule wall being broken during insertion can be observed through the transparent base and the transparent cavity.

[0152] In an exemplary embodiment, see Figure 25 , which shows a schematic diagram of the structure of the base in another embodiment of the present application. To facilitate gripping during use, the base is further provided with a fourth anti-slip portion 64 on the distal side. The fourth anti-slip portion can be a plurality of raised or recessed textures formed on the proximal side of the cover to conform to ergonomics or the user's gripping habits, or a plurality of silicone strips or other anti-slip structures provided on the distal side of the base. Furthermore, the base is configured as a substantially rectangular parallelepiped structure, which is easier to grip during use and more comfortable when the user applies force.

[0153] In an exemplary embodiment, see Figure 27 , which shows a schematic diagram of the structure of another embodiment of the inhalation device of the present application. As shown in the figure, the inhalation device includes a cover 1, a mouthpiece 2, a filter 3, a capsule compartment 4, a piercing assembly 5, and a base 6. The cover 1, mouthpiece 2, capsule compartment 4, and base 6 are coaxially hinged at the distal end. In addition, to facilitate operation, anti-slip features are provided on the proximal side of the cover, proximal side of the mouthpiece, the outer surface of the button pressing portion, and the distal side of the base.

[0154] The cover body 1 and the proximal side of the cover plate 41 are provided with corresponding snap-fit ​​structures, so that when the base and the cover plate are snapped together, the cover body can be opened or closed relative to the base. The upper portion of the nozzle body 21 of the suction nozzle 2 is used to cooperate with the human mouth so that the user can inhale the powder medicine into the respiratory tract through the suction nozzle. The bottom of the inhalation channel of the suction nozzle 2 is a tubular structure, and the filter 3 is sleeved on the tubular structure. The sleeve portion 31 of the filter 3 cooperates with the groove on the outer surface of the lower part of the inhalation channel 22 through a circle of protruding ribs on the inner surface, thereby fixing the filter 3 to the bottom of the inhalation channel. In addition, the sleeve portion 31 and the screen portion 32 of the filter are an integrated structure, so as to facilitate manufacturing and production while achieving filtering and fixing functions, eliminating the step of assembling the screen portion and the sleeve portion.

[0155] The capsule bin 4 is located below the suction nozzle 2, and the capsule bin includes an integrated cover plate 41 and a chamber 42, wherein the chamber 42 is further divided into a main chamber 421 and a sub-chamber 422. The capsule can be placed in the chamber through the capsule insertion port on the cover plate. Since the diameter of the main chamber is larger than the transverse cross-sectional diameter of the capsule and smaller than the longitudinal cross-sectional diameter of the capsule, and the diameter of the sub-chamber is smaller than the transverse cross-sectional diameter of the capsule, the capsule remains in a vertical state in the main chamber to facilitate puncture by the piercing assembly. The upper part of the sub-chamber is connected to the main chamber, and the lower part also has an opening, and there is a gap between the sub-chamber and the bottom of the base to allow external airflow to enter the capsule bin. A corresponding snap-fit ​​structure is provided on the proximal side of the suction nozzle 2 and the cover plate 41, so that the suction nozzle and the cover plate can be snap-fitted and fixed, and notches are provided on both sides of the distal side of the cover plate to provide an air inlet after being installed on the base. The capsule insertion port and the filter element have end surfaces that match each other in shape, so that when the suction nozzle and the capsule compartment are engaged, the filter element can be pressed against the capsule insertion port and fit tightly to avoid airflow leakage.

[0156] The piercing assembly 5 maintains a positional relationship with the capsule chamber 4 through the mounting plate 44. The piercing assembly 5 includes a button member 51, two needles 52 and a reset mechanism 53. Among them, the button member 51 includes a pressing portion 510 and a movable connection portion 511 located on both sides of the distal end of the pressing portion. A corresponding card slot 441 is provided at a position corresponding to the movable connection portion on the mounting plate. The limiting portion on the movable connection portion can restrict the button member in the card slot so that the button member can move along the card slot but will not escape from the card slot. The reset mechanism is located between the movable connection portions on both sides. A supporting portion 442 is provided at a position corresponding to the reset mechanism on the mounting plate. One side of the reset mechanism 53 is connected to the button member 51, and the other side is installed on the supporting portion 442 to help the button member return to its initial position after pressure is applied to the button member. The proximal ends of the two puncture needles are respectively fixed on the button member and are arranged up and down. Relatively, tube portions are respectively provided at positions corresponding to the two puncture needles on the mounting plate, so that after the puncture assembly is installed on the mounting plate of the capsule compartment, the two puncture needles are respectively located in their respective corresponding tube portions. Since the tube portions are connected to the main chamber, when pressure is applied to the button member, the button member can drive the puncture needles through the tube portions to the main chamber to puncture the capsule.

[0157] Here, in order to better control the movement direction of the button member and drive the puncture needle to puncture the capsule in the capsule chamber more accurately and efficiently, two slender guide rails are provided on the proximal lower surface of the cover plate, and correspondingly, an upward extension arm is provided on the upper side of the button member, and a guide groove is provided on the extension arm at a position corresponding to the guide rail. When force is applied to the button member, the guide groove on the button member can move along the guide rail of the cover plate, thereby avoiding the puncture needle from being deviated or the resistance caused by the unstable moving position of the button member when pressing. More importantly, the guide design of the button member can guide the two needles to move stably on the horizontal line during the process of pushing the button to puncture the capsule, so as to ensure that the shape and size of the hole on the capsule shell remain relatively consistent after the capsule is punctured by the needle, which not only ensures that the drug powder in the capsule chamber can escape smoothly under the action of negative pressure, but also prevents the generation of capsule skin debris during the puncture of the capsule due to the shaking of the puncture needle.

[0158] Furthermore, to prevent excessive puncture of the capsule when the button is pressed, a third stop is provided at the distal end of the guide rail. When the button moves along the cover plate and abuts against the bump, it is restrained by the bump and cannot be further advanced, thereby limiting the movement of the piercing assembly relative to the capsule compartment. Simultaneously, a baffle is provided below the proximal interior of the base, with an upwardly protruding stop on the distal end. Because the baffle body is lower than the lower surface of the button, the button is allowed to pass through, while the stop is higher than the lower surface of the button, preventing it from passing through. Consequently, when pressure is applied to the button, the button first moves along the top surface of the baffle body toward the capsule compartment. When the button contacts the stop, it is unable to continue moving toward the capsule compartment. This, by limiting the movement of the piercing assembly relative to the capsule compartment, controls the depth of penetration of the needle into the capsule.

[0159] The base 6 includes a body 61, which is hollow and accommodates the capsule compartment 42. The sides of the cover 41 of the capsule compartment 4 and the upper sides of the body 61 have corresponding engaging structures, allowing the capsule compartment to be assembled and disassembled from the base. An opening 613 is provided on the proximal side of the body 61. Once the capsule compartment is assembled into the base, the opening 613 provides space for the piercing assembly to move along the capsule compartment under applied force.

[0160] The base also includes a U-shaped transparent window 63. The bottom surface of the base body 61 is provided with a mounting groove extending to the front and rear sides of the base body. The transparent window 63 is installed on the base body 61. At the same time, the chamber of the capsule bin is also made of transparent material, so that the status of the capsule in the chamber can be observed through the transparent window and the transparent chamber during use.

[0161] During use, the user first opens the cover 1 and the nozzle 2, inserts the capsule into the main chamber 421 through the capsule insertion port 411 on the cover 41, then closes the nozzle 2 and the cover 1 and presses the button. The button drives the needle along the tube into the main chamber to puncture the capsule. The guide rail and guide groove between the cover and the button make the pressing process smoother, while the third stop on the guide rail and the second stop on the base prevent the puncture assembly from over-puncturing. When the user releases the force on the button, the reset mechanism returns the button to its initial position.

[0162] The user then opens the lid, places his mouth over the mouthpiece and inhales. Figure 28 , which is a schematic diagram showing the airflow direction of the inhalation device in the present application in one embodiment. As shown in the figure, under the action of the negative pressure generated in the suction nozzle 2, the external airflow enters the base through the gap between the cover plate and the base (i.e., the first air inlet), and enters the main chamber 421 through the bottom of the sub-chamber 422. Due to the structural design of the screen part, an airflow that is conducive to the escape of powder is generated in the main chamber. The powder enters the inhalation channel of the suction nozzle 2 through the screen part, while the capsule debris is blocked outside the screen part. The powder in the inhalation channel is sucked into the user's body.

[0163] Finally, open the suction nozzle to clean the capsule shell and debris in the capsule compartment, and / or wash and dry them, then cover the suction nozzle and cover body for subsequent use.

[0164] The inhalation device in the present application adopts an integrated filter element and capsule chamber, which reduces the difficulty and cost of production while ensuring the use effect. In addition, in the inhalation device of the present application, the filter element fits tightly with the capsule insertion port, and when the suction nozzle and the cover plate are engaged, the entire screen part is located in the capsule chamber, so that when the drug powder is inhaled, the air flow can better pass through the screen part under the action of negative pressure to produce an ideal flow direction, ensuring the effective inhalation of the drug powder. The guide structure that cooperates with the cover plate and the button part can avoid the needle from puncturing off-center or the resistance caused by the unstable moving position of the button part when pressing. The cover body, suction nozzle, filter element and base of the inhalation device are coaxially connected and are provided with anti-slip structures in multiple places, which conforms to the ergonomic design.

[0165] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this application shall be covered by the claims of this application.

Claims

1. An inhalation device, characterized in that include: The nozzle comprises a nozzle body and a suction channel formed in the nozzle body, wherein the bottom of the suction channel is a tubular structure; The filter element includes a sleeve portion sleeved on the bottom end of the tubular structure and a screen portion integrally formed with the sleeve portion and made of the same polymer structural material, which is used to prevent capsule debris generated after the capsule is punctured from entering the inhalation channel and ensure the stability of the screen structure. The distance between the lowest point and the highest point of the screen portion is 0.35 to 0.51 mm to form a surface curvature to control the distribution of the flowing airflow. The lower outer surface of the filter element has a stepped structure formed by the shape transition between the sleeve portion and the screen portion. The capsule compartment is located below the suction nozzle and includes a cover plate and a cavity integrally formed on the underside of the cover plate for accommodating capsules when in use. The cover plate is provided with a capsule insertion opening that communicates with the cavity and corresponds to the screen portion. The upper portion of the inner surface of the capsule insertion opening of the cover plate has a shape corresponding to the stepped structure to enable the filter element to fit tightly with the capsule insertion opening. A first guide portion is provided on the proximal side of the lower surface of the cover plate. a piercing assembly disposed on one side of the capsule compartment, comprising a button member movably disposed on the side of the capsule compartment and a puncture needle, the button member having a second guide portion that cooperates with the first guide portion, and the button member, when subjected to force in a state of use, linearly moves relative to the capsule compartment to drive the puncture needle to puncture the transition position between the main body and the top portion of the capsule at both ends of the capsule compartment; the needle tip of the puncture needle has an inclined surface, and its tip point is not in a straight line with the axis position of the puncture needle; The base comprises a seat body for accommodating the chamber and a portion of the piercing assembly; a first stop portion is provided at a position of the capsule compartment facing the button member, and a second stop portion is provided on the seat body of the base, for limiting the movement position of the piercing assembly relative to the capsule compartment; The cover body covers the suction nozzle when engaged with the base; the cover body, the suction nozzle, the capsule compartment, and the distal side of the base are coaxially hinged via a hinge portion; Wherein, in a state where a capsule is placed in the capsule compartment and the capsule is punctured, when negative pressure is generated in the inhalation channel, the medicine powder in the capsule passes through the capsule insertion port and the screen portion into the inhalation channel.

2. The inhalation device according to claim 1, characterized in that The cover body includes a first engaging portion located on the proximal side of the cover body and configured to engage with the proximal edge of the cover plate.

3. The inhalation device according to claim 2, characterized in that The first engaging portion is a protrusion located on the inner side of the proximal end of the cover body, and the proximal end of the cover plate has an end surface that cooperates with the protrusion, so that the cover body and the cover plate are engaged at the proximal side.

4. The inhalation device according to claim 1, wherein The cover body includes a first anti-slip portion located on the proximal side of the cover body.

5. The inhalation device according to claim 1, characterized in that The nozzle body comprises: A mounting portion, configured to engage with the cover of the capsule compartment; The mouthpiece is integrally formed with the mounting portion and has a nearly flat elliptical structure adapted to the human mouth; Wherein, a transition surface is provided between the mounting portion and the suction mouth portion.

6. The inhalation device according to claim 1, characterized in that The suction nozzle includes a second clamping portion located on the proximal side of the suction nozzle; the cover plate includes a third clamping portion located on the proximal side of the cover plate, and the second clamping portion and the third clamping portion are clamped at the proximal end.

7. The inhalation device according to claim 6, characterized in that The second engaging portion is a hook structure formed on the lower surface of the nozzle, and the third engaging portion is a bayonet provided on the cover plate and corresponding to the hook structure.

8. The inhalation device according to claim 1, wherein The suction nozzle includes a second anti-slip portion located at the proximal side of the suction nozzle.

9. The inhalation device according to claim 1, characterized in that The bottom end of the tubular structure extends out of the nozzle body, so that the filter element sleeved thereon is pressed against the capsule insertion opening when the nozzle and the cover plate are engaged, thereby forming a closed airflow channel.

10. The inhalation device according to claim 1, wherein The cover plate includes a side wing, and a fourth clamping portion is provided on the side wing for clamping on the fifth clamping portion on the upper side edge of the base.

11. The inhalation device according to claim 1, wherein The cover plate is provided with a first air inlet, which is used to facilitate external air to enter the internal space of the base through the first air inlet when negative pressure is generated in the suction channel.

12. The inhalation device according to claim 1, wherein The chamber of the capsule magazine comprises a main chamber, the diameter of which is larger than the transverse cross-sectional diameter of the capsule and smaller than the longitudinal cross-sectional diameter of the capsule.

13. The inhalation device according to claim 12, characterized in that A sub-chamber connected to the main chamber is provided at the bottom of the chamber of the capsule compartment, the bottom end of the sub-chamber has a second air inlet, and there is a gap between the second air inlet and the bottom surface of the base, and the diameter of the sub-chamber is smaller than the transverse cross-sectional diameter of the capsule.

14. The inhalation device according to claim 1, wherein The chamber of the capsule magazine includes a mounting structure for cooperating with the piercing assembly so that the piercing assembly uses its puncture needle to pierce the capsule in the capsule magazine during the movement relative to the capsule magazine.

15. The inhalation device according to claim 14, characterized in that The mounting structure includes: The mounting plate is provided with symmetrical slots; an abutting portion formed on the mounting plate and located between the symmetrical slots; Two tube parts are formed on the mounting plate and are respectively located at the upper and lower sides of the abutting part, communicating with the chamber to limit the puncture direction of the needle.

16. The inhalation device according to claim 15, characterized in that The piercing assembly further comprises a reset mechanism, which is located between the button member and the abutment portion and is used for being compressed when the button member moves toward the capsule compartment to provide a reset force to restore the puncture needle and the button member to their initial positions.

17. The inhalation device according to claim 15, characterized in that The puncture needle is inserted into the tube portion, and the proximal end of the puncture needle is fixedly connected to the button component.

18. The inhalation device according to claim 15, characterized in that The button component includes a pressing portion and a movable connecting portion integrally formed with the pressing portion, and the distal end of the movable connecting portion has a limiting portion that cooperates with the slot.

19. The inhalation device according to claim 18, characterized in that The outer surface of the pressing portion is provided with a third anti-slip portion.

20. The inhalation device according to claim 1, wherein There are two needles arranged vertically, and the distance between the two needles is smaller than the height of the capsule and larger than half of the height of the capsule.

21. The inhalation device according to claim 1, wherein The seat body of the base includes a fourth anti-slip portion located at a distal side of the seat body.

22. The inhalation device according to claim 1, wherein The proximal end of the base is provided with an opening for providing a movement space for the piercing component.

23. The inhalation device according to claim 1, wherein The base further comprises a transparent window mounted on the base body, and the chamber of the capsule bin has a transparent wall surface for observing the status of the capsules in the capsule bin through the base when in use.

24. An inhalation device according to claim 23, characterized in that The transparent window is U-shaped. Correspondingly, a mounting groove extending to the front and rear sides of the base is provided on the bottom surface of the base for mounting the transparent window.

25. The inhalation device according to claim 1, wherein The base is made of a transparent material, and the chamber of the capsule compartment has a transparent wall surface, so that the state of the capsules in the capsule compartment can be observed through the base when in use.

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